package ObjectHomeWork;

import java.util.Scanner;

public class MatchesDemo {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        String email=scanner.nextLine();

        String regex="[a-zA-Z0-9]+@[a-zA-Z0-9]+(\\.[a-zA-Z]+)+";
        boolean match = email.matches(regex);
        if(match){
            System.out.println("是正确的邮箱格式");
        }
        else{
            System.out.println("不是正确的邮箱格式");
        }
    }
}
